Звездный десант чит-файл №1

Royal Guard/X-Bug Weakness
The Royal Guard bug and the X-Bug both have similar weaknesses in that they are
invincible everywhere except for their red eyes. For the Royal Guard bug, simply
shooting out both eyes is just enough to expose the vulnerable nerve stem for
your weapons to kill it.

The X-Bug makes this harder by forcing you to shoot the nerve stem to provoke it
into rearing up. This exposes its yellow weak spot underneath. You only have two
whole seconds to spray it before you have to expend a ton of ammo on the nerve
stem to make it rear up once more.